YASKAWA L1000H Quick Start Manual page 45

LED Operator
Display
Current detection error
• One or all output phases are lost.
Er-12
• Current is either too low or exceeds the drives
rating.
• The current sensors are faulty.
Rated current alarm
• The torque reference exceeded 20% during
End1
Auto-Tuning.
• The calculated no-load current is above 80%
of the motor rated current.
Motor iron-core saturation alarm
End2
• Calculated core saturation values out of range.
• Incorrect data was entered.
End3
Rated current alarm
YASKAWA Europe TOEP C710606 91B AC Drive L1000H - Quick Start Guide
Cause
7 Troubleshooting
Corrective Action
• Check the wiring.
• Make sure, that the drive rating fits to the motor.
• Check the load. (Auto-Tuning should have been
performed without the load connected.)
• Replace the drive.
• Check the V/f pattern setting.
• Perform Auto-Tuning without the load con-
nected.
• Check the input data and repeat Auto-Tuning.
• Check the input data.
• Check the motor wiring.
• Perform Auto-Tuning without load connected.
Check the input data and repeat tuning.
EN 45